Home / 385,988,409.56-532,668,119.21-209,776,414.16

Finding the Fourth Proportional to 385,988,409.56, 532,668,119.21 and 209,776,414.16

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Solution

The fourth proportional to 385,988,409.56, 532,668,119.21 and 209,776,414.16 is: 289,493,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,988,409.56 : 532,668,119.21 = 209,776,414.16 : x
  2. Step 2: Convert to fraction form
    385,988,409.56/532,668,119.21 = 209,776,414.16/x
  3. Step 3: Cross multiply
    385,988,409.56x = 532,668,119.21 × 209,776,414.16
  4. Step 4: Simplify right side
    385,988,409.56x = 111,741,207,981,512,992
  5. Step 5: Solve for x
    x = 111,741,207,981,512,992/385,988,409.56
  6. Step 6: Final answer
    x = 289,493,687.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.